Solve the following: x^2=3x+70

x= -7

x= 10

Step-by-step explanation:

To solve, set the equation to zero by moving everything to the left side.

x^2=3x+70

x^2-3x-70=0

(x+7)(x-10)

x=-7

x=10

using pemdas, (order of operations) you'll see the answer is 24.

answer: hence, function will be

explanation:

since we have given that

cost of a new textbook = $85

according to question, the resale value of a textbook decreases by 25% with each previous owner,

so, our function becomes,

here, y is the total value of the text book after x owners.

hence, function will be