Question

Function f is represented by f(x) = 5x+10
Find f(-3)
Find the value of x such that f(x) = 90 is true

Answer 1

Answer:

x= 56

Step-by-step explanation:

(−3)(90)=−5x+10

Step 1: −270=−5x+10

Step 2: Flip the equation.−5x+10=−270

Step 3: Subtract 10 from both sides.−5x+10−10=−270−10−5x=−280

Step 4: Divide both sides by -5.−5x−5=−280−5x=56