Final answer:
To enlarge a 3-in by 5-in photograph by 150%, each dimension should be multiplied by 1.5, resulting in a new photograph that is 4.5 inches by 7.5 inches.
Step-by-step explanation:
To determine the new dimensions of a photograph that is to be enlarged by 150%, we multiply the original dimensions by the enlargement factor. An enlargement factor of 150% means that the photo's size is increased by 1.5 times the original size.
For a 3-in by 5-in photograph:
- Width: 3 in × 1.5 = 4.5 inches
- Height: 5 in × 1.5 = 7.5 inches
The dimensions of the new photo will be 4.5 inches by 7.5 inches.