Ryan bought a pack of gum for $0.89, a soda for $1.39, and a donut for $0.75 from the convenience store. how much was his total?

a : $3.03
b : $2.03
c : $2.83
d : $1.83

m∠a is 90°

m∠b is 40°

0.038

step-by-step explanation:

sample answer: you can determine whether each element of the domain is paired with exactly one element of the range. for example, if given a graph, you could use the vertical line test; if a vertical line intersects the graph more than once, then the relation that the graph represents is not a function.