plz

at a sporting goods store, sweatshirts are on sale for 30% off the regular price, r, in dollars. lana has a coupon for $5 off any single item at the store. the expression 3(r – 0.3r) – 5 represents the total cost before tax if lana buys 3 sweatshirts.
a. 3r-0.3r-5
b. 2.1r-15
c. 3(0.7r)-5
d. 3(r-0.3r-5)
e. 3r-0.9r-5 which ones represents total cost before tax?

The radius of the circle below intersects the unit circle at (3/5,4/5). what is the approximate value of theta? 0.6 radians 1.0 radians 36.9 degrees 53.1 degrees

Use the given degree of confidence and sample data to construct a confidence interval for the population mean mu . assume that the population has a normal distribution. a laboratory tested twelve chicken eggs and found that the mean amount of cholesterol was 185 milligrams with sequals 17.6 milligrams. a confidence interval of 173.8 mgless than muless than 196.2 mg is constructed for the true mean cholesterol content of all such eggs. it was assumed that the population has a normal distribution. what confidence level does this interval represent?

Given the functions, f(x) = 2x^2 - 1 and g(x) = 5x, find f(g(x)) and g(f(