Jess and Silvia have 420 marbles between them. If Jess has five times as many marbles as Silvia, how many do they each have?

Find all the second partial derivatives. \[ w=\sqrt{u^{7}+v^{9}} \] \( w_{u u}=42 u^{5} \) \( w_{u v}=0 \) \( w_{v u}=0 \) \( w_{v v}=72 v^{7} \)

4. Which theme does this passage want to express to the reader a. good overcomes evill b. honesty is the best policy c. the importance of family d. doos are fiendlier thon cots

Cilulate the area bounded by: 1. \( y=2 x+1 \), the \( x \)-axis, the \( y \)-axis and \( x=3 \).

5. \( y=x^{2}+3 x-10 \) and the \( x \)-axis.

The efficiency loss of a tax is the idea that: Multiple Choice in addition to taking income from the citizenry, taxes also increase the rate of inflation. benefit exceeds marginal cost. taxes diminish incentives to work. government spends rand less efficiently than do marginal households and businesses.