13. Higher Order The she puts her rocks into collection. When there are no rocks left over. 2 equal piles, therer rocks into 3 equal When she puts her piles, there are still no rocks left over. When she puts her rocks into 4 equal piles, there are still no rocks left over.

Suppose that a company wishes to predict sales volume based on the amount of advertising expenditures. The sales manager thinks that sales volume and advertising expenditures are modeled according to the following linear equation. Both sales volume and advertising expenditures are in thousands of dollars. Estimated Sales Volume \( =45.05+0.49 \) (Advertising Expenditures) If the company has a target sales volume of \( \$ 275,000 \), how much should the sales manager allocate for advertising in the budget? Round your answer to the nearest dollar.

Find the vertex,intercepts, domain, and range. Enter intercepts as ordered pairs, aka points. \( f(x)=x^{2}+2 x-3 \) Vertex \( =(-1,-4) \)

B. Se vu a sembrar con césped un campo de golf que tiene forma de trapecio. Sis bases miden: 48.5 dam y 12.5 dam. Si su altura es de 8 dam y sembrar un metro euadrado de césped vale \( \$ 12.500 \). ¿cuánto dinero se necesita para sembrar céspec en todo el terreno?

FMU Question 5 Miss Jones decided to divide her class of 24 students into groups according to the colour of their hair: brown, black, blonde and red. She counted three times as many brown haired students as those with black hair. There were six less, blonde haired students than brown haired students and the number of red haired students was one third of those with blonde hair. How many students of each hair colour did Miss Jones have in her class?

28. Chelsey put \( \$ 450 \) into an account with a simple interest rate of \( 2.5 \% \). When she withdrew the money she had earned a total of \( \$ 67.50 \) in interest. How long did she leave the money in the account?