Fast plz.
coach jules bought more than five bats. some were wood, and some were composite. the wood bats cost $49 each, and the composite bats cost $100 each. coach jules spent less than $400. write the system for wood bats that could be used to represent this equation. let w stand for wood, and c stand for bats.

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

If there are 12 moths and some have 31 days and others have 30 days how many have 28 days?

What are the measures of ∠a, ∠b, ∠c and ∠d? explain how to find each of the angles. measure need asap