Answer:
15x+25 ; 70
Step-by-step explanation:
Given that,
Fernando cleans pools for the summer for $25 an hour plus a supply fee of $15.
Here, $25 is constant and $15 increases as the number of hour increase. For x hours, the cost for Fernando to clean a pool is given by :
y = 15x+25
For 3 hours,
y = 15(3)+25
= 45 + 25
= 70
So, the required option is (c) " 15x+25 ; 70 ".
Answer:
63 = 3 × 3 × 7
Step-by-step explanation:
Here in this question, we have to write 63 as a product of its primes.
So, we have to first factorize 63 to get its prime factor.
Now, the factors of 63 are 7, 3 and 3 and all of them are prime numbers.
Therefore, we can write 63 as the product of its primes as 63 = 7 × 3 × 3 (Answer)
If we write the factors as smallest first then we have to write 63 = 3 × 3 × 7 (Answer)