7.5.3 Check Your Understanding

What is the final elevation if a butterfly starts at 20 m and changes -16 m?

• 4 m

• 36 m

• 20 m

• -16 m

What is the final elevation if a whale starts at -9 m and changes 11 m?

• 2 m

• -20 m

• 11 m

• -9 m

What is the overall charge of neon if it has a charge from electrons of -10 and a charge from protons of +10?

• 0

• -20

• +20

• -10

What is the overall charge of oxide if it has a charge from electrons of -10 and a charge from protons of +8?

• -2

• 0

• +2

• -18

What is the overall charge of copper if it has a charge from electrons of -27 and a charge from protons of +29?

• +2

• -2

• 0

• +56

Find the value of the expression: -9.2 + 4.4.

• -4.8

• -5.8

• -3.8

• -6.8

Fill in the blank: The expression for a 5% increase in the price of gasoline from g dollars is ____.

• g + 0.05

• g + 0.05g

• 1.05g

• 0.05g

What is the result of adding 14.7 and 28.9?

• 43.6

• 42.6

• 44.6

• 41.6

Calculate the sum: -9.2 + 4.4.

• -4.8

• -5.8

• -3.8

• -6.8

Fill in the blank: Bettie's Boutique offers a ___% discount on the original price.

• 10

• 15

• 20

• 25