Answer:
10
Step-by-step explanation:
1. 2(4.5)+1
2. 9+1
3. 10
With the meal costing $18 and the tip being $15 the total will be $33
Answer:
15
Step-by-step explanation:
Co-efficient = number multiplied by a variable
The only number multiplied by a variable is 15, therefore, it's the co-efficient.
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Answer:
r = 20
Step-by-step explanation:
-4 = r/20 - 5
-4 + 5 = r/20 - 5 + 5
1 = r/20
1 * 20 = r/20 * 20
r = 20