One fourth the sum of r and ten is identical to r minus 4

Bill is a software salesman. His base salary is $1500, and he makes an additional $80 for every copy of History is Fun he sells. Let P represent his total pay (in dollars), and let N represent the number of copies of History is Fun he sells.

A children's roller coaster travels along 3300 feet of track at a rate of 15 miles per hour how many seconds does the take to travel this length of track

One eighth of a number increased by 20 is 32

15 Ellen is at a hydroplane boat show. Starting from 1.0 miles away, the boat drives towards her and then passes her. The boat passes at a constant rate of 70 miles per hour. Ellen is given by d=l1.0-70tl. At what time is the boat 0.

Multiply ' (9 sqrt (y) + 4) (8 sqrt (y) - 6) y > 0

If 6a=5b, what are the following ratios? a:b

D (1) = 3 D (n) = d (n-1) - 14

Mariana runs at a rate of 300 meters how far does she run in 8 minutes

What is the answer? 2/3x is not equal to 1/2+2

If cosθ=513, what is sinθ?