Identify the value of x that makes each pair of ratios equivalent. 4. 21 to x and 7 to 10 a.24 b.30 c.40

B

Step-by-step explanation:

Start by writing the ratios equal to each other since they are equivalent.

Notice if you divide 21/3 = 7. Since they are equa then x/3=10. What number divided by 3 equals 10? x=30

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what is the image?

5x + 5

step-by-step explanation:

you should always add the diagrams and graphs we cannot see. this particular question is kind of borderline because we can make a graph for you.

(f + g)x = -x^2 +3x + 5 + x^2 + 2x

(f + g)x = 5x + 5

the graph of z = 5x + 5 is shown below. always use desmos when in doubt.