4) Alex bought some gum for 15 cents each and some candy for $0.25 each. The amount of candy was 10 less than five times the amount of gum. He spent a total of $450
How much of each did he buy?

Create a system of equation for the situation above&
Solve the system of equations.

What kinds of numbers have an odd number of factors?

Arley is building a model of a city map. in one part of the city, three roads form a right triangle, which harley draws as triangle abc, with the following measures: m∠b=90° and m∠a=30°. in his scale model, the hypotenuse of triangle abc, ac¯¯¯¯¯¯¯¯, has a length of 817−−√ cm. what is the value of a (the length of bc¯¯¯¯¯¯¯¯)?

What is the measure of the smallest angle in the diagram? 15 29 32 45