How many questions do you need to answer correctly to improve a

grade from 84% to a 95%

Five less than a product of a number and 3 is 14

Twenty cars go past your house during a 5-minute period. At that rate, how many cars will go past your house during a 15-minute period?

X+2y=200 x=y+50 find the substitution

A regression analysis can be used to determine a. if a linear relationship exists between two categorical variables. b. a cause-and-effect relationship between two variables. c. if the difference in the population means may be zero. d.

Grammy gave the server $15 tip. If the tip was 20% of the cost of dinner, how much was dinner

Add one set of parentheses to the expression 2x2 + 4 - 5 so that the value of the expression is 75 when x = 6.

Kim took C dollars to the sporting goods store to spend on new cleats. If the cleats cost $42.97, which of the following expressions represents the number of dollars Kim will have after buying the cleats? A. 42.97- B. C + 42.97 C. 42.97 + c D. C-42.

The half-life of iodine-123 is about 13 hours. You begin with 38 grams of iodine-123. (a) Write an equation that gives the amount of iodine-123, I, remaining after t hours. Write your answer in the form I (t) = a⋅bt.

Work out the balance for £1500 invested for 2 years at 3.7% per annum

Denise drew a scale drawing of a hotel. A room in the hotel is 35 inches wide in the drawing. The actual room is 14 feet wide. What scale did Denise use for the drawing? 5 inches: feet