5x + 14 = -7 solve for x

-4.2

Step-by-step explanation:

5x+14=-7

5x=-7-14

5x=-21

x=-21/5 or -4.2

4 times

Step-by-step explanation:

1 quart is equivalent to 32 fluid ounces.

If each eruption consumes 8 fluid ounces of vinegar. Assuming that the amount of vinegar required per eruption is constant, the number of times Tanvi can make her volcano erupt is:

Tanvi can make her volcano erupt 4 times  with 1 quart of vinegar.