Jessica wants to go on a school trip next month. The trip will cost $100 and she already has $10 and plans to babysit for $5 an hour to earn the rest of the money. A. Write an equation that could be used to determine h, the number of hours Jessica needs to babysit to earn $100.

B. From your equation, determine the number of hours she needs to babysit.

Step-by-step explanation:

100=10+5x  x is the hours she needs to babysit

90=5x

x=18

She needs to babysit for 18 hours at $5 an hour if she already has $10

step-by-step explanation:

answer:   35 % is the probability of a late departure or an early arrival.

step-by-step explanation:

let l represents the late departure and e represents the early departure.

then, according to the question,

p(l) = 12 %,   p(e) = 27 % and = 4 %

and, we have to find out,

but, we know that,

which is the required equation that will use to find the probability of a late departure or an early departure.

therefore,   the probability of a late departure or an early arrival =   35 %