Jaclyn want to save at least $48 to buy a new video game. She already has $16 and will save $4 every week. How many weeks, x, will it take Jaclyn to save up enough money to buy the video game? Which inequality correctly represents the above scenario?
A. 16x+4≤48
B. 4x+16≤48
C. 16x+4≥48
D. 4x+16≥48

Astudent must have an average on five test that is greater than it equal to 80% but less than 90% to receive a final grade of b. devon's greades on the first four test were 78% 62% 91% and 80% what range if grades on the fifth test would give him a b in the course? ( assuming the highest grade is 100%)

Arandom sample of 15 observations is used to estimate the population mean. the sample mean and the standard deviation are calculated as 172 and 63, respectively. assume that the population is normally distributed. a. with 99 confidence, what is the margin of error for the estimation of the population mean? b. construct the 99% confidence interval for the population mean. c. construct the 95% confidence interval for the population mean. d. construct the 83% confidence interval for the population mean. hint: you need to use excel function =t. inv.2t to find the value of t for the interval calculation.

Two different points r and y are dilated from s with a scale factor 3/4, andry equal 15. use the dilation theorm to describe two facts that are known about ry