Which could be the measures of the three angles of an acute triangle?

a. 30*, 30*, 120*
b. 30*, 60*, 90*
c. 40*, 40*, 100*
d. 50*, 55*, 75*

Simonne used the following steps to simplify the given expression. 12 - 3(-2x + 4) step 1: 12 + (–3)·(–2x) + (–3)·(4) step 2: 12 + 6x + (–12) step 3: 12 + (–12) + 6x step 4: 0 + 6x step 5: 6x what property of real numbers was used to transition from step 3 to step 4? a. identity property of addition b. inverse property of addition c. associative property of addition d. commutative property of addition

On a piece of paper graph f(x)=5•(0.4)^x

Inez has a phone card. the graph shows the number of minutes that remain on her phone card a certain number of days.