Eric goes to the store to buy ingredients for dinner. He needs ground beef, shredded cheese, salsa, and tortillas. The ground beef costs $3.79, the shredded cheese costs $2.69, the salsa costs $3.77, and the tortillas cost $1.50. He has the following coupons: off ground beef, $0.50 off shredded cheese, and $1.00 off salsa. Part A: What is the total cost of the items before Eric uses the coupons?

Part B: What is the total of all of the coupons?

Part C: How much will Eric pay after he uses the coupons?`

part.a  11.75

part.b 1.50

part.c 10.25

Step-by-step explanation

first you do is add your original prices first

then you go back to your percentages and sense the ground beef doesn't have a coupon off its the original price for that

and your coupons added up deduct from the price and 10.25 is your new answer

a box 3 3/4 feet long or 4+ feet.

step-by-step explanation:

answer: 204

step-by-step explanation:

we are told that the revenue is

x⋅(4080−10x)=−10x^2+4080x

this is a quadratic function, so to maximize it we should find the x-value of its vertex. recall that the x-value of the vertex of the parabola ax^2+bx+c is given by the formula −b/2a.

so in this case, we have a=−10 and b=4080, so the x-value of the vertex is

−b/2a= −(4080)/2(−10)=204