Answer:
120 + 3.5x≤ 190
Step-by-step explanation:
Add up all the costs
80+ 10+10+20 + 3.50x where x is the number of cupcakes
Combine like terms
120 + 3.5x
This must be less than or equal to 190
120 + 3.5x≤ 190
Answer:
x = 0
Step-by-step explanation:
2x + 161 = x + 46 + 115
Subtract x
x + 161 = 161
Subtract 161
x = 0
Answer:
$1.80. 4 pints = 2 quarts. $3.60/2 = $1.80.
Step-by-step explanation:
hope this helps
S_n = n(first term + a_n)/2
n = 15
S_15 = 15(2 + a_n)/2
We need a_n.
a_n = first term + d(n - 1)
a_n = 2 + d(15 - 1)
1. Find d.
2. Plug d into expression to find a_n.
3. After finding a_n, plug back into
S_15 = 15(2 + a_n)/2 to find the sum of the first 15 terms.
Take it from here.
