Which angle below is an acute angle

a.

b.

c.

d.

Write a story that matches with the expression 42x-5 pls hurry

What is the effect on the graph of the function f(x) = x2 when f(x) is changed to f(x) − 4?

Plz answer asap! i will reward brainliest and 12 points for these three questions!take notice: these three questions are completely different! 1) what is the percentage of sugar in the syrup made of 10 kg of water and 4 kg of suugar? 2) what was the original price if after 10% discount it became $450? 3) at first a price was decreased by 12%, then it was disounted again by an additional 5%. what is the percent of the total discount? , and remeber i will award brainliest and 12 points!