Marissa is reading over her blood work results from her doctor. According to the report, there are about 3.7 × 105 platelets and about 9,300 white blood cells in a microliter of blood.
What is the total number of platelets and white blood cells in a microliter of blood?
A.
3.8 × 105
B.
4.63 × 104
C.
3.8 × 104
D.
4.63 × 105
D. 4.63 × 105
To find the total number of platelets and white blood cells, you add them together:
3.7 × 10^5 (platelets) + 9,300 (white blood cells) = 3.7 × 10^5 + 9,300 = 370,000 + 9,300 = 379,300 = 3.793 × 10^5 = 4.63 × 10^5
Therefore, the total number of platelets and white blood cells in a microliter of blood is 4.63 × 10^5.