In which situation is the original price bigger? (a) after a 5% discount the price was $190; (b) after a 10% discount the price was $180; (c) after a 20% discount the price was $170; (d) after a 30% discount the price was $140.

C

Step-by-step explanation:

Calculate each one of them to see which one is highest:

a)190/.95 = 200

b) 180/.9 = 200

c)170/.8 = 212.5

d)140/.7 = 200

earnings on monday - 7t - 1

earnings on tuesday - 8t + 5

total earnings = earnings on both monday and tuesday

we need to add the earnings on monday and tuesday

total earnings = 7t - 1 + 8t + 5

we bring the like terms together

= 7t + 8t - 1 + 5

since 7t and 8t are like terms we can add them and get 15t

-1 and +5 have different signs so we have to find the difference of the 2 numbers which is 5 -1 = 4 and the put the sign of the larger number (+5) , positive sign

answer is = 15t + 4

answer is d. 15t + 4