Brenda’s scores on the first three of four 100-point science tests were 95, 92, and 89. what score does she need on her fourth science test to ensure an average score of at least 93?

step-by-step explanation:

the multiplicative inverse of a fraction a/b is b/a. for the multiplicative inverse of a real number, divide 1 by the number. for example, the reciprocal of 5 is one fifth 1/5 or 0.2, and the reciprocal of 0.25 is 1 divided by 0.25, or 4.

-6 is the correct option from the above given options