Vlad tried to solve an equation step by step. \qquad\begin{aligned} -8p+14&=42 \\ -8p&=28&\green{\text{Step } 1} \\ p&=-3.5&\blue{\text{Step } 2} \end{aligned}
−8p+14
−8p
p


=42
=28
=−3.5


Step 1
Step 2


Find Vlad's mistake.

b. 24 mm

step-by-step explanation:

use the pythagorean theorem.

a^2 + b^2 = c^2

a^2 + 7^2 = 25^2

a^2 + 49 = 625

a^2 = 576

a = 24

answer: b. 24 mm

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step-by-step explanation:

c.

step-by-step explanation:

substitution for (0,1)

y=x^2+4x+1

1=0^2+4(x)0+1

1=0+4(x)0+1

1=4(x)0+1

1=0+1

1=1

substitution for (-3,-2)

y=x+1

-2=-3+1

-2=-2