Lauren pays $19.99 for a membership fee to an online music store. Lauren buys songs from a new album at the price of $0.99 each.
1 answer:
The right answer is Option B.
Step-by-step explanation:
Let,
Number of songs = x
Price of 1 song = $0.99
Membership fee = $19.99
Total amount paid = $21.97
According to given statement;
0.99x+19.99=21.97
Subtracting 19.99 from both sides
Dividing both sides by 0.99
Lauren bought 2 songs.
The right answer is Option B.
Keywords: Linear equation, subtraction
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Answer:
Step-by-step explanation:
Use the Pythagorean Theorem to solve for z. a^2 + b^2 = c^2, which a and b being the side lengths
9^2 + 12^2 = 81+ 144
81+144=
= 15
z= 15
The power rule applies to each term.
... (d/dt)(t^n) = n·t^(n-1)
... g'(t) = 2t +5
... g'(7) = 2·7 +5 = 19
