Question

What is the value of the expression below when y, equals, y = 9?
y to the power of 2 + 10y − 8

Answer 1

What is the value of the expression below when w = 8 and x =6?
10w + 10x

Answer 2

To evaluate the expression \( y^2 + 10y - 8 \) when \( y = 9 \), we can substitute \( 9 \) for \( y \) in the expression.

1. Substitute \( y \) with \( 9 \):
\[
9^2 + 10(9) - 8
\]

2. Calculate \( 9^2 \):
\[
9^2 = 81
\]

3. Calculate \( 10(9) \):
\[
10(9) = 90
\]

4. Now substitute these values back into the expression:
\[
81 + 90 - 8
\]

5. Add \( 81 \) and \( 90 \):
\[
81 + 90 = 171
\]

6. Finally, subtract \( 8 \):
\[
171 - 8 = 163
\]

Therefore, the value of the expression when \( y = 9 \) is \( \boxed{163} \).

Answer 3

To evaluate the expression \( 10w + 10x \) when \( w = 8 \) and \( x = 6 \), we will substitute the values of \( w \) and \( x \) into the expression.

1. Substitute \( w = 8 \) and \( x = 6 \):
\[
10(8) + 10(6)
\]

2. Calculate \( 10(8) \):
\[
10(8) = 80
\]

3. Calculate \( 10(6) \):
\[
10(6) = 60
\]

4. Now substitute these values back into the expression:
\[
80 + 60
\]

5. Add \( 80 \) and \( 60 \):
\[
80 + 60 = 140
\]

Therefore, the value of the expression when \( w = 8 \) and \( x = 6 \) is \( \boxed{140} \).