question: - letter of acceptance of support.
Capitalize this past sentence correctly.
A: - Letter of acceptance of support.

question: unlike the bodycraft x-press pro home gym, the elite home gym has the lower pulley station on the side.
Capitalize this past sentence correctly.
A: Unlike the BodyCraft X-Press Pro home gym, the Elite home gym has the lower pulley station on the side.

question: in 1877 christoffel published a paper on the propagation of plane waves in media with a surface discontinuity.
Capitalize this past sentence correctly.
A: In 1877 Christoffel published a paper on the propagation of plane waves in media with a surface discontinuity.