Branliest and 30 points

evaluating expressions
1.x squared when x=3/4
2. x+y when x=11 and y=6.4
3. w-z when w=9.5 and z = 2.8

The holiday party will cost $160 if 8 people attend.if there are 40 people who attend the party, how much will the holiday party cost

How many 3-digit numbers can you write using only digits 1 and 7? (of course, digits can repeat.) how many 3-digit numbers can you write using only digits 1 and 7? (of course, digits can repeat.)

Write the fraction for the part that is shaded. then find the equivalent fraction.