Answer: 3 minutes
Step-by-step explanation:
it increased by 3 minutes everyday starting from 3, 6, and then finally 9.
The slope is 5. This is because the coefficient of x is the slope of a line.
Only A
And only when x = 1
Nothing else works.
(-2.3)*4.7 would be equal to -10.81
96 messages .... $4.80
155 messages .... x
x= (155x4.80):96=7.75
