Answer:
23.2
Step-by-step explanation:
15.7 - (-7.5) = 15.7 + 7.5 (because if there's 2 negative sign it makes the number positive)
15.7 + 7.5 = 23.2
It's a trapezium with a triangle
1045-950 = 95
95/950 = 0.1 = 10% increase
the answer for the second problem is x=99 degrees and y= 261 degrees
dunno the first problem :/