A function is defined by f (x) = 5 (2 minus x). What is f(–1)? –5 5 15 53

f(-1) = 15

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Algebra I

Step-by-step explanation:

Step 1: Define

Identify

f(x) = 5(2 - x)

Step 2: Evaluate

15

Step-by-step explanation:

f (x) = 5 (2 minus x)

Let x = -1

f (-1) = 5 (2 minus  -1)

      = 5( 2+1)

     = 5(3)

    =15

option c) graph of line going through 1, 4 and 3, 10

step-by-step explanation:

let y equal to margo's coin collection

let x equal to number of years

at the begining x=0, y=1 → point=(x,y)→point=(0,1)

she adds 3 coins per year, then y=1+3x

at x=1, y=1+3(1)=1+3→y=4→point=(x,y)→point=(1,4)

at x=3, y=1+3(3)=1+9→y=10→point=(x,y)→point=(3,10)

the graph of line going through (1, 4) and (3, 10), then the option c is the correct.

well what did you do it matters what you did : )

step-by-step explanation: