Evaluate 8 a − 1 + 0.5 b 8a−1+0.5b8, a, minus, 1, plus, 0, point, 5, b when a = 1 4 a= 4 1 a, equals, start fraction, 1, divided by, 4, end fraction and b = 10 b=10b, equals, 10.

6

Step-by-step explanation:

We want to evaluate:

8a-1+0.5b

When a=1/4 and b=10.

We simply substitute the given values of as and b into the given expression,

The value of the expression is 6 for the give values of a and b.

24

step-by-step explanation:

the graph shows 30% of students walk. 80 students were questioned, so the number that said they walk is

30% × 80 = 0.30 × 80 = 24