To multiply terms with exponents, the base of both exponents must be the same. In this case they are so multiply the coefficients and add the exponents:

-6c⁶ x 9c³
(-6 x 9)c^{(6 + 3)}
-54c⁹

Jennifer scored 78% on the test meaning she earned 78% of the possible points on the test. There were 100 possible points on the test so she earned 100 x 0.78 = 78 points. Each question is worth 2 points so she got \( \frac{78}{2} \) = 39 questions right.

The yearly interest charged on this loan is the annual interest rate multiplied by the amount borrowed:

interest = annual interest rate x loan amount

i = (\( \frac{6}{100} \)) x $1,100
i = 0.07 x $1,100
i = $77

To add or subtract terms with exponents, both the base and the exponent must be the same. In this case they are so subtract the coefficients and retain the base and exponent:

5c⁶ - 4c⁶
(5 - 4)c⁶
c⁶

You have 3 out of the total of 150 raffle tickets sold so you have a (\( \frac{3}{150} \)) x 100 = \( \frac{3 \times 100}{150} \) = \( \frac{300}{150} \) = 2% chance to win the raffle.