Holly works as a cashier for $8 per hour . She also works as a math tutor $10 per hour . Her parents only allow her to work 20 hours per week .Holly wants to make at least $170 this week . Which system of inequalities models correctly the hours that holly can work as a cashier , c , and a tutor , t, for the week

A. Ct<20
8c + 10t > 170

B. C + t < 20
8c + 10t > 170

C. C — t <20
8c + 10t > 170

D. C + t < 20
8c – 10t > 170

C

Step-by-step explanation:

It is B.

Step-by-step explanation:

The total hours she works as a cashier and tutor must be less than 20 because that's how much she is allowed to work, so the first equation is C+t<20. She earns 8 dollars per hour as a cashier so the first term is 8c. She earns 10 dollars an hour as a tutor so the second term is 10t. The total of those two jobs must be more than 170 because that's how much she hopes to at least earn, so the second expression is 8c+10t>170.

median is the value separating the higher half of a data sample, a population or probablity distribution from the lower half.

step-by-step explanation:

say you have 3,8,7,3,1,9,8 order them from lowest to highest

if orderd it would be 1,3,3,7,8,8,9 now you take away from the lowest and the highest until you end up in the middle.

so you would remove the 1 and 9 leaving you with 5 digits remaining

when you've reached the middle that would be your answer so in this case the answer is 7

if there were two numbers left say 7 and 5 you'd and them together so 12 then divide by 2 witch would equal 6 so the answer would be 6

good luck on that project hoped i you at all

x =-.20752

step-by-step explanation:

4^(x+2)=12

4^(x+2)=12

take the log base 4 on each side

log 4 (4^(x+2) = log 4(12)

we know log b(a^y) = y log b (a)

(x+2) log 4(4) = log 4 (12)

x+2 = log 4 (12)

we know   logb c = loga c/loga b

we want to convert to base 10   so a = 10

by default, we do not write the 10   c = 4   and b = 10

log4 10 = log 12/log 4

log4 10 = log 12/ log 4

x+2 = log 12/ log 4

subtract 2 from each side

x +2 -2 = log 12/ log 4 -2

x = 1.79248125 -2

x =-.20752