On Monday, Sam has a collection of 88 MP3s on his MP3 player. He downloads another 22 MP3s throughout the week, How many MP3s does he have by the lend of the week?
A 4
B. 22
C. 66
D. 88
E. 110

The fence around a quadrilateral-shaped pasture is 3a^2+15a+9 long. three sides of the fence have the following lengths: 5a, 10a-2, a^2-7. what is the length of the fourth side of the fence?

Which of the following is the best first step in solving the equation below? 4+2㏒³x=17

Consider the function f left parenthesis x right parenthesis equals 4 x squared minus 3 x minus 1f(x)=4x2−3x−1 and complete parts (a) through (c). (a) find f left parenthesis a plus h right parenthesis f(a+h); (b) find startfraction f left parenthesis a plus h right parenthesis minus f left parenthesis a right parenthesis over h endfraction f(a+h)−f(a) h; (c) find the instantaneous rate of change of f when aequals=77.