7. david bought two types of cards. he bought x type of cards that cost $4 andy
type of cards that cost $2. there are a total of 22 cards and they have a total cost of
$26. if he bought 5 of the $4 type of cards, how many of the $2 cards did he buy?
cards

Which solid has two triangular bases and three lateral faces, each in the shape of a rectangle? triangular prism triangular pyramid rectangular prism rectangular pyramid

Consider the function y = f(x)=3^x the values of f(1/2) and f(1/4). rounded to the nearest hundredth, are__and__ respectively

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%)