Mario earns money mowing his neighbors' lawns. The revenue for mowing x lawns is f(x) = 25x.
Mario's cost for gas and the mower rental is c(x) = 6x+ 15.
His profit from mowing xlawns is p(x) = (r- c)(x). What is p(x)?
O A. p(x) = 31x – 15
O B. p(x) = 19x- 15
O C. p(x) = 31x+15
O D. p(x) = 19x + 15
SUBMIT

this is answer of 144 cubic meters

7,24

step-by-step explanation:

step-by-step explanation:

step 1: solve one of the equations for one of the variables. let's solve the first equation for y:

step 2: substitute that equation into the other equation, and solve for x.

step 3: substitute x = 4 x = 4 x=4 into one of the original equations, and solve for y.

m∠a is 90°

m∠b is 40°