Robert bought x pounds of potatoes for $1.99 per pound. he paid for the potatoes with a $10 bill. which of the following variable expressions represents the amount of change he received from his $10?
a. 10 - 1.99x
b. 1.99x - 10
c. 10 - 1.99 = 8.01
d. 10 - x = 1.99

How many sides does a regular polygon have if each exterior angle measure is 45 degrees explain your answer, i really don't understand this.

High school seniors with strong academic records apply to the nation’s most selective colleges in greater numbers each year. because the number of slots remains relatively stable, some colleges reject more early applicants. suppose that for a recent admissions class, an ivy league college received 2851 applications for early admission. of this group, it admitted 1033 students early, rejected 854 outright, and deferred 964 to the regular admission pool for further consideration. in the past, this school has admitted 18% of the deferred early admission applicants during the regular admission process. counting the students admitted early and the students admitted during the regular admission process, the total class size was 2375. let e, r, and d represent the events that a student who applies for early admission is admitted early, rejected outright, or deferred to the regular admissions pool.suppose a student applies for early admission. what is the probability that the student will be admitted for early admission or be deferred and later admitted during the regular admission process?

The given diagram shows the parts of a right triangle with an altitude to the hypotenuse. using the two given  measures, find the other four.