Answer:
Step-by-step explanation:
We are given the set:
And we want to express this in interval notation.
In words, this reads: all values of <em>x</em> between 3 and 13 and <em>x</em> does not equal 4.
Hence:
We use parentheses as we do not include the values of 3 and 13 inside our interval. Likewise, since <em>x</em> cannot equal 4, we skip four, but use the union symbol to connect the two intervals.
Since 5 is being multiplied by itself 4 times, that part would be written as
5^4 (5 to the power of 4)
And since 4 is being multiplied by itself 3 times, that part would be written as 4^3 (4 to the power of 3)
Then, since they are being multiplied together the final answer in exponential form is 5^4 * 4^3.
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Answer:
C 44.59
Step-by-step explanation:
The first two shirts are full price
2*49.96 = 99.92
The third shirt is 50% off. That means it is 50% of the original price
.5*49.96 = 24.98
The total cost before tax is
99.92+24.98 =124.90
tax = cost * tax rate
tax = 124.90*.071
tax=8.87
Add this to the cost
final cost = 124.90+8.87
=133.77
We want to find the mean cost (average cost)
Take the total cost and divide by the number of shirts
133.77/3 =44.59
